LED display technology trends: Quantum dot lighting product release [Full text]

The dynamic innovation of science and technology is almost a household word in the business world. In the West, more than 60% of the Standard & Poor's 500 companies have incorporated "innovation" into their corporate mission and deliberately used the word "innovation" when marketing or branding. The same innovation is also an important "life force" for the development of the LED display industry.

Previously, in an interview with the media, LED field expert Jiang Fengyi said that China's LED technology and industry have developed rapidly. Both technology and industry have entered the world's advanced ranks. So, what is the current development of LED technology?

First quantum dot lighting product launch

Recently, the world's first quantum dot microsphere LED product release and application seminar was held in Tianjin, a beautiful city in the Bohai Sea. At the meeting, various types of quantum dot packaging devices and quantum dot lighting products were distributed around quantum dot microsphere materials.

Tianjin Quanhuan Quantum Technology Co., Ltd., the publisher of Quantum Dot Fluorescent Microspheres, is dedicated to the research and development of nanocrystalline materials and composite materials. It currently has QLMS, Quantum Dots (QD+), QD-ALEF, and HB- QLED and many other leading international and domestic patented technologies. Based on this material, Zhonghuan Lighting has introduced LED package devices based on composite quantum fluorescent materials and high-quality, high-color rendering quantum dot lighting products.

Experts participating in the conference mainly include Ms. Guan Baiyu, Secretary General of the China Semiconductor Lighting and Application Alliance, Mr. Wang Zhuo, Secretary General of the China Lighting Association, Mr. Hu Chunming, Secretary General of the Liquid Crystal Branch of China Opto-Electronics Industry Association, China OLED Industry Alliance, and BOE Policy. Mr. Sun Xiaobin, Director of Government Affairs, Mr. Xu Zheng, Director of Institute of Optoelectronics Technology, Beijing Jiaotong University, Ms. Niu Pingjuan, Secretary of School of Electrical Engineering and Automation, Tianjin Polytechnic University, and Professor Yuan Mingjian, Professor of School of Chemistry, Nankai University.

At the press conference, Tianjin Zhonghuan Electronic Lighting Technology Co., Ltd. released a quantum dot backlight device based on QLuMiS technology and the first QLED high color lighting table lamp that uses quantum dot packaging devices.

Tianjin Zhonghuan Electronic Lighting Technology Co., Ltd. has for the first time introduced a quantum dot LED packaged device, which features wide color gamut, low power consumption, and low cost, and is the key to the next-generation LED display technology. The device provides excellent characteristics such as high color gamut comparable to OLED technology in the field of liquid crystal display, and will be a key device for the performance upgrade of domestic mature liquid crystal display production capacity products. The mobile phone sample using the technology device as a backlight was demonstrated at the conference. Its display effect is obviously better than the traditional LED device as the mobile phone of the backlight source, and can completely be comparable to the display effect of the OLED screen mobile phone. According to the company's introduction, because it does not require major changes to the traditional product structure, and the manufacturing cost of the device is far lower than that of OLED devices, the cost of high-gamut display screens will be greatly reduced in the future, thereby enabling more Mobile terminal devices such as mobile phones achieve high color gamut display at a low cost.

The first quantum dot lighting product was also introduced at the conference. With the help of quantum dot LED packaging devices, the product has a core advantage of high color rendering index (Ra>95, R9>95), achieving a balance of red, green, and blue light. At the same time, the product enhances the accurate interpretation of different colors, enhances the recognition of edge contours, and essentially improves the lighting effect of the lamp from the light source. The Quantum Table lamp introduced this time has a differentiated design for different user groups, in particular for real-life simulation of the writing environments for primary and secondary school students' writing and reading, youth desktop lighting, and high-end business people, and has improved users from the details. Experience.

Ms. Guan Baiyu, Secretary-General of China Semiconductor Lighting/LED Industry and Application Alliance, said that the development of China's LED industry in the past 10 years has achieved rapid development in the field of LCD backlight and semiconductor lighting, and the industry scale has continuously expanded, and technological innovation capability Improve quickly. In the process of rapid industrial development, more independent innovation materials are needed to support the development of China's LED industry. By participating in the release of QLuMiS technology and products, Quantum Dot Microspheres of Tianjin Zhonghuan Quantum Science and Technology Co., Ltd. was seen as one of the core new materials in the field of LED packaging materials, providing new innovations for the improvement of LED performance. Materials, walking in the forefront of innovation. It is hoped that Zhonghuan will continue to do a good job in the research and development of its work and applications, so that high-performance materials with independent intellectual property rights can be applied to more product areas.

Two-dimensional material semiconductor gated quantum dots make important progress

The Key Laboratory of Quantum Information of the Chinese Academy of Sciences, led by Academician Guo Guangcan of China University of Science and Technology, has made important progress in the research of semiconductor gated quantum dots recently. Prof. Guo Guoping of the laboratory and his collaborators have further explored the possibility of the application of two-dimensional layered transition metal chalcogenide to semiconductor quantum chips. For the first time in experiments, a fully electronically controlled quantum is realized in a semiconductor flexible two-dimensional material system. Point device.

After decades of development, semiconductor gated quantum dots have become one of the most popular candidates for quantum chips as a quantum transistor. The two-dimensional material system represented by graphene has become a key research object for flexible electronics and quantum electronics because of its natural monolayer thickness, excellent electrical properties, and ease of integration. However, after more than ten years since the discovery of graphene, scientists have experimented extensively and found that the energy band structure and interface defect impurities in graphene have a great influence on the performance of quantum dot devices. Until now, quantum dots in two-dimensional materials have not been able to achieve effective electrical regulation.

In response to this situation, Guo Guoping’s research team collaborated with researchers from Japanese National Materials Research Institute Takashi Taniguchi and Kenji Watanabe, and Professor Franco Nori from the Institute of Physical and Chemical Research to select a new two-dimensional material, molybdenum disulfide, for further study. The material has a suitable bandgap, strong spin-orbit coupling strength, and rich spin-energy-grain-related physical phenomena, and therefore has a wide range of applications in quantum electronics, particularly spintronics and Nenggu electronics. Application prospects.

After a large number of trials, the research group used micro-nano processing, low-temperature LED irradiation and a series of modern semiconductor process methods, combined with the current boron nitride packaging technology widely used in the two-dimensional material system research, effectively reducing the impurities in the quantum dot structure. , Defects, etc., for the first time in this class of materials to achieve a fully electronically controlled dual quantum dot structure.

Using a miniature LED screen, Google AR glasses or return

According to techradar, Google AR glasses have returned in some form in recent months, but the new glasses have been modified to target corporate users. AR looks up again and Google may invest again. In March 2016, Google applied for a patent. From the perspective of patents, fully revised hardware may appear again.

The device described in the patent is a spectacle frame type device that displays AR information to the user with a micro LED transparent display.

The initial launch of Google Glass had a serious problem: the display was mounted on a glass prism and was outside the wearer's natural field of vision. The user had to look up to see the information, was uncomfortable to use, and was easily distracted.

The device shown in the patent displays information in front of both eyes instead of one eye. In this way, the rendered image is more depth, and the patent also implies that the micro LED can be switched between transparent and opaque modes for displaying AR and VR applications, respectively. Google's technology can also be used on other devices.

Google actually used a miniature LED screen, which was really interesting because Apple acquired a company called LuxVue, which is the main micro LED company. There are rumors that Apple is developing AR glasses, it seems that the two companies coincide in the AR wear architecture. Smart glasses puzzles have slowly become clear.

Apple layout Micro LED

According to Appleinsider, a foreign technology website, Apple is actively deploying Micro LED technology, which is expected to be used in future Apple Watch products to extend battery life. The report pointed out that if the future Apple Watch uses a Micro LED panel, it is not necessary to charge the entire night.

The foreign scientific website, Patently Apple, reported that Apple’s patented application for Micro LED has come to the forefront and uses Smart-Pixel Controller to control the LED pixels that drive the display screen. In the future, it will have the opportunity to be used on iMac computers. iPhone or Apple TV.

The Nikkei Asian Review previously quoted industry sources reporting that Apple plans to use Micro LED panels in its own wearable devices as soon as 2018. The media recently reported that, from market speculation, Apple may try to produce Micro LED screen products in Taoyuan, Taiwan by the end of this year.

Patently Apple previously reported that Apple has developed a head-mounted display HMD (head-mounted display) headset with the trend of screen design, gradually toward the direction of the development of Micro LED.

According to the report, a head-mounted display screen with a Micro LED panel can be operated using only about 10% of the power of the LCD panel. The power consumption is only 10% of that of the LCD, the power saving effect is quite significant, and the game can be expanded. Applications can also become peripheral devices for the iPad or iPhone.

Shenzhen LED smart street lights first on the streets

Recently, at the entrance to the Shenzhen Bay Science and Technology Ecological Park, Shahe West Road in Shenzhen has established two highly technical street light poles. This street light pole is named “Common Road for Smart Roads”, which combines multiple levers and is powerful! The equipment is in the pole and outsiders can't see it. The industry is called the invisible Iron Man in the lamppost. The road to future wisdom requires only a single lever to achieve almost all functions.

1. Even wifi: Within 50 meters of the light pole, citizens can access Wi-Fi free of charge. 2, display time, parking spaces, road conditions: lamppost comes with a LED display, real-time scrolling display surrounding road conditions, travel time, surrounding parking spaces, weather conditions and other travel information.

3. Alarm: An alarm is configured on the lamp pole and can be used for alarm calls in emergency situations. In addition to providing the public with all kinds of traffic information and internet services, the common road of smart roads is far more than that. Taking the light pole as a hardware carrier, it also integrates 23 kinds of sensing devices such as video, DSRC, IoT relay, WIFI probe, and environment detector. It supports road panorama monitoring, traffic operation monitoring, road danger warning, road and road coordination control. , intelligent orientation guidance, equipment and other features along the line.

The original title here is what you want to know about the latest advances in LED technology